sciencehabit writes: If you've pondered whether to sink a cool couple of grand into a fancy new three-dimensional TV but didn't want to mess around with those dorky glasses, you may want to sit tight for a few more years. Researchers at Hewlett Packard Laboratories in Palo Alto, California, report that they've come up with a new 3D technology that not only doesn't require viewers to wear special glasses, but it also can be viewed from a wide variety of angles. The advance could propel the development of mobile 3D devices as well as TVs.